Tomography, X-Ray ComputedImage Processing, Computer-AssistedRadiographic Image Interpretation, Computer-AssistedRadiographic Image EnhancementSubtraction TechniqueImaging, Three-DimensionalImage Interpretation, Computer-AssistedReproducibility of ResultsAlgorithmsArtifactsPhantoms, ImagingRadiation DosageRadiotherapy Planning, Computer-AssistedCone-Beam Computed TomographySensitivity and SpecificityPositron-Emission TomographyRadiometryRadiography, AbdominalTomography, Spiral ComputedFour-Dimensional Computed TomographyPattern Recognition, AutomatedFluorodeoxyglucose F18RadiopharmaceuticalsRadiotherapy, Image-GuidedMultimodal ImagingWhole Body ImagingContrast MediaMultidetector Computed TomographyObserver VariationRadiotherapy DosageData CompressionRadiography, ThoracicModels, AnatomicAutomationTime FactorsRetrospective StudiesRadiotherapy, Computer-AssistedSolitary Pulmonary NoduleLethal Dose 50PneumoradiographyFeasibility StudiesIohexolTreatment OutcomeSurgery, Computer-AssistedRadiography, DentalAdministration, OralImage EnhancementDrug Administration ScheduleEquipment DesignRadiotherapy, Intensity-ModulatedTomography Scanners, X-Ray ComputedRespiratory-Gated Imaging TechniquesDiagnostic ImagingFiducial MarkersTomography, Emission-ComputedArtificial IntelligenceLung NeoplasmsDiagnosis, Computer-AssistedLatency Period (Psychology)Tomography, Emission-Computed, Single-PhotonThoracic NeoplasmsPubic SymphysisOssification of Posterior Longitudinal LigamentBrainComputer SimulationAnatomy, Cross-SectionalRadiation ProtectionIodine RadioisotopesSoftwareDose-Response Relationship, RadiationRadiation OncologyBronchographyVisible Human ProjectsIopamidolRespirationRadiography, Dual-Energy Scanned ProjectionLungDose FractionationNeoplasmsRadiologyMonte Carlo MethodFluorine RadioisotopesDouble-Blind MethodX-Ray MicrotomographyNormal DistributionModels, BiologicalProspective StudiesRadiography, PanoramicInjections, IntravenousRadiography, InterventionalEquipment Failure AnalysisArea Under CurvePredictive Value of TestsRadiology Information SystemsLiver NeoplasmsMagnetic Resonance ImagingSignal-To-Noise RatioMovementModels, StatisticalLiver